1,Low price and high reliability 2,High efficiency 3,High power factor 4,CE,ROHS Specification:1, Input voltage: 100-240Vac2, Input current: 0.1A ... current: 300mA7, Output power: 3W8, Efficiency:75%9, Ripple voltage: 200mV10, Operating Temperature: -20~+50°C11, Size: 41*22*18MM 3W LED constant current driving power ...